gpio: pca953x: Fix pca953x_gpio_set_config

[ Upstream commit dc87f6dd058a648cd2a35e4aa04592dccdc9f0c2 ]

pca953x_gpio_set_config is setup to support pull-up/down
bias.  Currently the driver uses a variable called 'config' to
determine which options to use.  Unfortunately, this is incorrect.

This patch uses function pinconf_to_config_param(config), which
converts this 'config' parameter back to pinconfig to determine
which option to use.

Fixes: 15add06841a3 ("gpio: pca953x: add ->set_config implementation")
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index de5d1383f28da9538336a16e67a127be14f8f9a2..3edc1762803ac087a0f845ea6a57b6479bd07ed7 100644 (file)
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -528,7 +528,7 @@ static int pca953x_gpio_set_config(struct gpio_chip *gc, unsigned int offset,
 {
        struct pca953x_chip *chip = gpiochip_get_data(gc);
 
-       switch (config) {
+       switch (pinconf_to_config_param(config)) {
        case PIN_CONFIG_BIAS_PULL_UP:
        case PIN_CONFIG_BIAS_PULL_DOWN:
                return pca953x_gpio_set_pull_up_down(chip, offset, config);